对于香港公共屋村房屋保养上的责任，由业主承担的有( )。 A．一切公共地方、公共设

下图为世界某区域，A城海拔1077米，冬季常出现能使10厘米左右的积雪在一天之内融化消失的“吃雪风”。原因是

A．暖流流经增温

B．反气旋气流下沉增温

C．暖锋过境增温

D．地形阻挡气流下沉增温

People now sleep about 20% less than they did a century ago. One 2010 poll of 1000 Americans found 36% are drowsy or fall asleep when they are driving, and 29% become very sleepy at work.

中 * * 党指出，战胜蒋介石的政治基础是（）所具有的爱国的正义的（）的性质，必然要获得全国人民的拥护

电动机过载保护控制电路的触点为常开触点

• (A) 条件(1)充分，但条件(2)不充分．
• (B) 条件(2)充分，但条件(1)不充分．
• (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
• (D) 条件(1)充分，条件(2)也充分．
• (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．

A university awarded grants in the amount of either $7, 000 or $10, 000 to some incoming freshmen. The total amount of all such awards was $2, 300, 000. Did the university award more $ 7,000 grants than $10,000 grants to its incoming freshmen
(1) A total of 275 freshmen received grants in one of the two amounts.
(2) The amount of money awarded in $10,000 grants was $200,000 more than the amount of money awarded in $7,000 grants.